JP3300945B2 - How to dye raw rush - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for dyeing rush,
More particularly, the present invention relates to a method for dyeing raw rush, which is excellent in prevention of discoloration and environmentally friendly.

[0002]

2. Description of the Related Art Conventionally, the production of dried rush has been carried out by immersing the cut rush in a mud-dying solution and mud-dying the dried rush, and then drying it in the sun or a hot-air drier so as to maintain the green color peculiar to the rush. Done. However, the dried rushes were easily discolored by sunlight, and after 1-2 years, the green color changed to yellowish brown and the freshness was lost, and the light resistance was low. Also,
In the case of producing flower seeds and the like, the dried rush is dyed in a desired color using a basic dye. However, the color of the dried rush is low and light fading cannot be denied.

[0003] In addition, the tatami mat woven with the rush grass may be discolored and stained even if coffee, tea, soy sauce, etc. is spilled, even if it is spilled. Are subjected to resin processing, but these have significantly deteriorated natural color and texture.

[0004] On the other hand, in order to improve the light fastness of rush, dyeing has been carried out using dyes or pigments which do not easily fade. JP-A-63-295202 discloses a method of dyeing rush using a disperse dye obtained by improving a basic dye, and JP-A-5-318419 uses a metal-containing complex salt dye having a good light fastness. Each staining method has been proposed. However, with respect to the dyeing of rush using an acid dye, not only there is no description but also Japanese Patent Application Laid-Open No. 63-2952.
No. 02 describes that rush is not dyed at all.

[0005]

DISCLOSURE OF THE INVENTION The present inventors have made in view of the above-mentioned problems, and have developed an aqueous dyeing solution containing an acid dye and a dyeing aid while alive as much as possible when dyeing rush. It has been found that, when immersed, dyed rush that improves dye permeability to rush, has excellent color tone and texture, and is less likely to fade is obtained.

[0006] That is, an object of the present invention is to use an acid dye which does not easily cause environmental pollution and which is not easily discolored by sunlight and does not discolor even if soy sauce or coffee is spilled on a woven tatami surface. It is an object of the present invention to provide a method for dyeing raw rush that does not impair the natural texture of natural rush.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, live rush in a live state within 10 hours after mowing is grown with its cut surface directed downward. In the same standing state as at the time, into the dyeing aqueous solution containing an acid dye and a dyeing aid that develops the desired color, the length of the rush plant is divided into multiple stages of 1/2 to 1/4 and intermittent from below. Immersed from 3 to 14 hours intermittently from the root, immersed for 2 to 10 hours with the whole immersed, and dyed by infiltrating the aqueous solution into the pedicle from the lower cut surface Processing.

At this time, the rush in the present invention is a live rush having a relatively large number of living cells within 24 hours, preferably within 10 hours immediately after cutting. in this case,
From the cut cutting surface directed downward, it can be efficiently dyed into the pulp by the water absorption function of rush.

The immersion time in the aqueous dye solution is about 5 hours.
The time is set to about 24 hours, preferably about 5 hours to 15 hours. The immersion time is appropriately set in accordance with the elapsed time from the cutting of the rush, and those that have not been cut short are immersed in a short time, and those that have a little time elapse and whose water absorption function has deteriorated are immersed for a relatively long time. Here, the rush length is soaked intermittently in a plurality of stages, so that there is a time difference in the soaking time between the root and the tip. This is to prevent the dyed spots on the epidermis due to the difference in the hardness of the epidermis between the root part and the tip part, and to use the water absorption mechanism using the transpiration of the part exposed from the aqueous dye solution. This is to encourage. In the present invention, the length of the rush is 1/2 to 1 /
4 (usually divided into 2 or 3 sections), soaked intermittently from the root for about 3 to 14 hours, and immersed for 2 to 10 hours with the whole soaked to finish. On the other hand, in the past, since dry rush was used, a method of immersing in a dye solution at once and pulling up at once was adopted in order to avoid dyed spots of rush, but the present invention uses raw rush. As described above, the length of the rush is divided into a plurality of stages, and staining is performed with a time difference depending on the epidermis.

The acid dye used in the present invention is an edible dye which is one of food additives and has little harm to the human body. As the food color, a well-known food color having a desired color is appropriately selected and blended, and for example, fast green FCF, neucoxin, tartrazine, brilliant blue FCF, or the like is used. At this time, the dye is water 100
The dye aqueous solution is prepared by dissolving 0.2 to 10.0% by weight, preferably 0.5 to 5.0% by weight based on the weight%.
In addition, a vital dye for staining living tissues or cells may be employed. In this case, synthetic dyes having relatively little harm, such as eosin, acid fuchsin, light green, Janus green B, and aniline Use blue, Congo red, etc.

Chromium oxide, sucrose and copper sulfate are used as dyeing assistants. These may be used alone, or may be other well-known mordants, accelerating dyes, leveling agents or discoloration agents. You may use together with an inhibitor etc. At this time, chromium oxide increases the fixation of the acid dye to increase the depth and vividness of the color tone.
%, Preferably 0.05 to 0.10% by weight. Sucrose efficiently penetrates the aqueous dye solution into the cells of raw rush, and the sucrose is added to the dye aqueous solution in an amount of 0.5 to 10 to achieve the same osmotic pressure as the cells of raw rush.
0% by weight, preferably 1.0 to 5.0% by weight. When a large amount of sucrose is added, plasma separation occurs, and conversely, cell fluid is released, which makes absorption of the aqueous staining solution difficult, which is not preferable. Copper sulfate replaces magnesium ions of chlorophyll with copper ions, and is added in an amount of 2.0 to 20.0% by weight, preferably 5.0 to 10.0% by weight based on the weight of raw rush. Copper chlorophyll in which magnesium ions are replaced by copper ions is itself known as a food coloring agent, and since the cells of the rush are converted into a stable dye, the rush can maintain a bright green color, It is thought that it looks the same as if it did not fade.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the flowchart shown in FIG. As the cut rush (1), the raw rush that is in a live state immediately after the cut or approximately two hours has elapsed is used as it is.

In preparing the dyeing aqueous solution (2),
In the rush dyeing container, water, commercially available food dye green No. 3 (fast green FCF), chromic oxide, copper sulfate, sucrose,
Add a certain amount of vinegar and stir. Next, the rush is immersed (3) in the aqueous dye solution. At this time, the immersion time is
Although it can be appropriately set according to the growth state of the rush, that is, the youth and hardness of the rush, from the results of numerous experiments by the present inventors, the root to the tip are divided into 2 to 4 sections (preferably 2 to 3 sections).
Sections), immerse step by step from the root, and immerse each section for approximately 3 to 7 hours. Thus, it was found that what was further immersed for 2 to 8 hours while the whole was immersed was the best.
(This was confirmed by the cut surface from the root side to the tip that the dye liquor was filled in every corner of the cytoplasm.) The amount of the rush and the aqueous dye solution in the experiment was Examples are shown below. Water 2 liters Raw rush 250 g Food color green No. 3 18.8 g Chromic oxide 1.4 g Sucrose 18.8 g Vinegar 100 mL Copper sulfate 18.8 g Concentration of this dyeing aqueous solution and each dyeing aid The composition can be appropriately set according to the growth state of the rush or the preference of the user.

In the present invention, vinegar which is easy to obtain and handle is used to fix the acid dye, but acetic acid or glacial acetic acid may be used without limitation. In this case, the addition amount is appropriately adjusted in consideration of the acetic acid concentration contained in the vinegar.

The rush is taken out from the dyeing aqueous solution, drained (4), and after about 1 hour, the rush is immersed in a dyed water tank in which the dyed soil is uniformly dispersed to perform the soil dyeing treatment (5). This draining does not need to be performed until the rush is completely dried, and it is sufficient that the dyeing aqueous solution does not drip. This dyeing treatment is performed by using a well-known normal dyeing method and by a conventionally known method. Conventionally, this soil treatment is performed before dyeing rush, or is performed simultaneously with dyeing by adding dyed soil to an aqueous dyeing solution. Will be Next, the rush was taken out of the dyed water tank at once, put in a drying room, and kept at about 40 ° C to 50 ° C.
Drying (6) at a temperature of 6 ° C. for 6 hours to 7 hours gives dyed rush (7). In this drying process, it is assumed that drying is performed with warm air as in the conventional case. At this time, the dyed soil treatment shortens the drying time and makes the dyed color a natural finish close to a natural one.

Further, in the above method, food dye green No. 3 was used as the acid dye and finished to a color close to green peculiar to rush. However, food dyes that develop a desired color were used alone or in an appropriate ratio. Raw rush can be dyed in various colors by blending. Thus, in the case of flower clusters, rushes dyed in various colors are appropriately combined and woven. When a dye for vital dyes is used in place of the food dye, the concentration is usually adjusted to 0.001 to 0.1% with respect to 100% by weight of water, and the pH is appropriately adjusted. That is, except that vinegar is used under the above conditions, the procedure is performed in the same manner as in the above embodiment.

[0017]

The present invention is constituted as described above. In the rush plant dyed by the present invention, since the inner cytoplasm from the root side to the tip is uniformly dyed, light resistance is high. It is extremely excellent in fastness, has little fading over a long period of time, and has a very high commercial value on tatami mats and the like (for at least 4 to 5 years, it is the same as a new product). In addition, the fact that the inside of the stem is stained means that even if the epidermis of the tatami is damaged or peeled, the unstained portion in the stem is not exposed as in the conventional case, so that the wound and peeling are inconspicuous. Become.

In addition, since food pigments which do not harm the human body are used as dyes, no wasteful treatment is required when disposing of waste liquid after dyeing or disposing of used tatami mats. It is not only friendly to the environment but also has excellent economic effects. In addition, the fact that used tatami mats can be used as organic fertilizers (compost) also contributes greatly to environmental issues that have recently been taken up.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a manufacturing process of a dyed rush according to the present invention.

[Explanation of symbols]

 (1) Rust cutting process (2) Solvent and dye preparation process (3) Solution dipping process (4) Draining process (5) Mud dyeing process (6) Drying process (7) Dyeing rush

Claims (4)

(57) [Claims] An acidic dye and a dyeing assistant which produce live rush in a live state within 10 hours after cutting, with its cut surface facing downward and in the same standing state as at the time of growth, and develop a desired color. Into the aqueous dye solution containing the agent
Divided into 1/4 multiple stages, immersed intermittently from below,
3 hours to 14 hours intermittent soaking from the root,
A method for dyeing raw rush, wherein the whole is immersed for 2 to 10 hours, and a dyeing aqueous solution is permeated into a pedicle from a lower cut surface to perform a dyeing treatment. 2. The method according to claim 1, wherein after the dyeing treatment, water is drained, and after about one hour, the dyeing treatment is carried out by immersing the dyeing in a dyeing water tank in which the soil is uniformly dispersed. How to dye rush. 3. After the dyeing treatment, put in a drying room at about 40 ° C.
The method for dyeing raw rush according to claim 2, wherein the drying is performed at a temperature in the range of -50C for 6 hours to 7 hours. 4. The method according to claim 1, wherein the acid dye is used as an edible pigment, and chromium oxide, sucrose and copper sulfate are used as dyeing assistants.